The EX1 derailleur capitalises on the robust build and precise shifting attributes of the X-Horizon design, to create the world's first derailleur specifically made for E-MTBs.

Engineered to handle high-torque, low-cadence shifting across the 11-48 tooth E-Block cassette, the EX1 derailleur gives E-MTB riders clean, confident shifts, so they can spend more time enjoying the ride.


Rolling Bearing Clutch - Technology eliminates derailleur bounce and chain slap without sacrificing precision.

X-Horizon - This rear derailleur’s “straight parallelogram” design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.

X-Sync - SRAM X-Sync1x chainrings provide the highest level of performance and durability. The SRAM X-Sync1 tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-Sync1 chainrings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-Sync1 rings are an integral part of the SRAM 1x drivetrain.


Proven SRAM X-Horizon design that reduces shift force, ghost shifting and chain slap
14-tooth X-Sync pulley wheels
The EX1 derailleur is purpose built for E-MTB


Speed (RD): 8s
Cable Pull Ratio: 1:1
Cage (Rd): N/A
Max Tooth: 48
Color (RD): Black

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